Reference no: EM132510922
1. What are key features of mammals?
2. Which term describes an internal skeleton in animals?
3. Which kinds of mollusks are found in a marine environment
4. . Which kind of animals exhibit a blend of aquatic and terrestrial adaptations?
5. . Which animal phylum is soft-bodied animals, many with gills and a hard shell?
6. Which animal phylum has spiny surfaces, an endoskeleton, and a mouth?
7. Which animal phylum is the most numerous and diverse of all?
8. What term means "animals without backbones?"
9. List and describe the characteristics shared by all animals.
10. List and describe key features of chordates.
11. Which kind of animals have two distinct body forms: a stationary polyp and a floating medusa?
12. What are the characteristics of all arthropods?
13. What coincides with rapid diversification of mammals ~65 million years ago?
14. Which are examples of animals that have a complete digestive tract, with two openings?
15. List and describe characteristics of all vertebrates.